Washington's Birthday, also known as Presidents' Day, is a federal holiday held on the third Monday of February. The day honors presidents of the United States, including George Washington, the USA's first president. George Washington was the first president of the United States of America.
Complement component 5 is a protein that in humans is encoded by the C5 gene.Complement component 5 is involved in the complement system. It is cleaved into C5a and C5b: 1  C5a plays an important role in chemotaxis.2  C5b forms the first part of the complement membrane attack complex.omplement component 5 is the fifth component of complement, which plays an important role in inflammatory and cell killing processes.
In the examples above, the shaded complements complement either a subject or an object; i.e. they sit alongside either a subject or an object to complete it. So, as you'd expect, a complement that completes a subject is called a subject complement, and one that completes an object is called an object complement.owever, it gets more complicated. The term object complement is also widely used for a complement which is an object, and â although less common â the term subject complement is used a complement which is a subject.